Chair back



Nov. 7, 1939 u. R. BQOMAC-IEM CHAIR BACK Filed April 26, 1937 INVEN TOR.

ATORNEm.

Patented Na. 7, 193a li'i' FFiC E CHAIR BACK Application April 26, 1937,Serial No. 138,977

1 Claim.

My invention relates to improvements in theater chairs or chairs of thetype of theater chairs. Primarily, my invention relates to the backstructure and side structure of a theater chair.

5 It is one of the objects of my invention to provide a back structurefor a theater chair which may be formed by stamping the same from asingle sheet of material and with which may be integrated the side panelof the chair.

10 For the purpose of disclosing the invention, I have illustratedanembodiment thereof in the accompanying drawing, in which:

Fig. 1 is a side elevation of so much of a chair as is necessary fordisclosing my invention;

15 Fig. 2 is a longitudinal sectional view taken on the line 22 of Fig.1;

Fig. 3 is a transverse sectional view taken on the line 33 of Fig. 1;and

Fig. 4 is a side elevation, partially in section,

29 of my chair back and its associated side panel.

In the embodiment of the invention illustrated, each side standard of achair embodying my invention is preferably formed of a frame constructedof a T-bar bent into a substantially in- 1 verted U-shaped structureproviding vertical legs 5 and 2 and a top, cross-bar 3. Intermediate ofthe top and bottom, a U-shaped cross-bar d is secured between the legs land 2, preferably by welding. The outer decorating or cover panel 5 30is formed of sheet metal is secured against the standard by means of aU-shaped channel member, one leg ii of which is preferably welded to theinner face of the panel, the other leg '5 being adapted to take into thechannel of the n5 cross-member 4. The upper portion of the panel 5 isturned over the top arm 3 and is provided with a transversely extendinggroove 8 for a purpose to be more fully hereinafter explained.

The back 9 of the chair is formed from a single piece of sheet metalbeing suitably bent and shaped to provide the proper curvature for theoccupants back and is provided with a pair of forwardly extendingintegral wings ltl, these wings being bent forward on a rounded are asat 5 about ll. Each of the forward wings is provided with a side panelI?! adapted to be secured to the standard I. Each side panel i2 isintegrated with a wing It, being welded to a plate it! in turn welded tothe wing, as indicated in Figs. 3 and 4. 5 The front edge of the plateID is offset as at H)" and this offset portion is welded to the panel[2. Furthermore, it will be noted that the rear edge of the plate ill,as shown at IU', conforms in alignment to the bend it in the back 9.Therefore, each of the wings it is stiffened by the plate it but thisstilfening effect stops substantially at the bend of the wing, therebypermitting the wings to be bent along a line parallel with the back topermit adjustment of the plate l2 to accommodate different angles atwhich the 10 standards may be set. The bottom edge of the side panel i2is provided with an inturned portion it carrying a downwardly extendedlip l4 adapted to take into the U-shaped cross-bar 4. The upper end ofthe panel I2 is provided with a groove i5 similar to the groove 8 andengages over the top cross-bar 3. When the lip I4 is socketed in thecross-bar 4 and the outer and inner panels ti and I2 lapped over the topcrossbar 3, a securing channel member I6 is slid into 2 the grooves andsecurely locks the two side panels together. This securing panel IEcarries the arm ll of the chair.

The seat it of the chair is preferably secured on a stretcher rod it]which is bolted into the side panel l2.

Chairs of this character are arranged. in the theater, as a rule, inrows, each forming the arc of a circle. This arc, of course, fordifferent conditions, is variable and in order to accommodate this arcand to swing the side panels in or out in accordance with demands, it isvery easy to bend the side panels and associated standards toward oraway from each other on the line of the bend ii in the chair. Thestructure, there- 5 fore, lends itself to ready assembly and mounting inthe theater under varying conditions.

I claim as my invention: i

A chair back comprising a back portion having at its opposite edgesforwardly extending wings and formed from a single sheet of metal, aside panel for connecting each wing with a support standard and aconnecting plate welded respectlvely to each side panel and itsassociated wing, the rear edge of said plate extending sub- 5 stantiallyparallel with the chair back to provide a bend line parallel with thebend line in the wing parallel with the chair back.

IRL R. BROM'AGEM.

